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  1. bksprinkler

    Pump test

    After replacing the butterfly with a gate valve, the test ran just fine. It may have been a defective valve, but I think more likely it was just a combination of the pressure and high volume of water that caused the problem.
  2. bksprinkler

    Pump test

    Thanks for all the responses. They have been very helpful. I am a little skeptical that the discharge it getting air into the pump suction. It is at least 30 ft away, and even with the pump running at 1200 gpm, it should take quite a while to pull water from the pond into the wet well. Also...
  3. bksprinkler

    Pump test

    This is the first test I have seen without a test header. In theory, there isn't much difference, but obviously the theory doesn't help miuch in this situation. The flow meter is more than 5 diameters downstream from the first butterfly, and the second is more than two downstream from the...
  4. bksprinkler

    Pump test

    One of the drawbacks of working almost entirely in the office is that I miss out on a lot of the field experience. But I recently had the opportunity to witness the startup of a vertical turbine pump. The startup went well, and the pump seems to be operating correctly, but we ran into some...
  5. bksprinkler

    Single Inlet FDC

    Check out section 8.17.2.3 in the 2010 edition.
  6. bksprinkler

    Sprinkler proximity to AC diffuser etc

    Be aware that the more restrictive requirements (2'-0" from ceiling diffuser instead of 1'-0", etc.) found in table 8.3.2.5(c) apply to ALL types of sprinklers installed in residential areas, not just to residential sprinklers.
  7. bksprinkler

    SprinkCAD vs. HydraCAD

    Thanks to you both for your opinions. They are very helpful. The reason we haven't really considered AS is because of the type of work we do. We do a lot of large scale residential projects. In addition to lots of underground parking garages (which I think would be just fine in AS), we work...
  8. bksprinkler

    SprinkCAD vs. HydraCAD

    Thanks, Travis. I have not used Autosprink. I have heard good things about it. Unfortunately, it is not AutoCad based, and the type of work we do requires an AutoCad based program. I have also heard that it has trouble with importing large autocad drawings, and the majority of the projects I...
  9. bksprinkler

    SprinkCAD vs. HydraCAD

    Has anyone used both programs? My company is considering making a change in the sprinkler design and calculation software we use, and I would like to know what other users think of the programs, especially if there is someone who has used both.
  10. bksprinkler

    Density for a 13-R fire sprinkler system

    SD2, Good analysis in your post. You are correct that even at a 0.1 density, it often makes little difference in corridors and similar spaces becuase the spaces are narrow. I also used to think that the 0.1 density applied outside the dwelling unit, even when using residential sprinklers...
  11. bksprinkler

    Class I Standpipes on Roof

    I have a fire inspector requesting that Class I Standpipe outlets be placed on the roof a structure such that all points of the structure are within 150 ft. of a connection. It has always been my understanding that NFPA 14 requires standpipes within 150' of every floor level for non-sprinkler...

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